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PERTU ISET, MUND-EL & DE HERON.-

Igniting Explosive Projectiles Patented May 26, 1868.

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F ER N, or PARIS, FRANCE Letters PatentNa. 78,322, dated May 26,1868,

IMPROVEMENT IN IGNITING EXPLOSIVE PR JEGTIL'BS.

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TO WHOM I'r MAY CONCERN:

Be it knownthat adam Psn'rursnr, Aueus'rn Momma, and JEAN ETIENNE ARMIDE DE FLnRoN, of Paris, in the Empire of France, invented certain new and useful I'mprovementsin Projectiles'dapable of Exploding without Priming; and -we hereby declare the following to be a full, clear, and exact description of the same, reference being bad to the accompanying drawings.

The object we have in view in this invention is to produce a projectile which, without priming, will explode when it reaches itsintended destination. 7 I l v It is useless to indicate thedisadvantages attending the use of percussion-caps for projectiles of this nature, for they are well known, and the advantages possessedby our improved projectilewillappear from its very description, We will therefore at once proceed to designate the means which are employed by us in order to realize our object, referring, atthetsame time, to the annexed drawings, in which-- 1 Figures 1 and 2 represent a sectionand a plan vie'wof a percussion-fuse, which is screwe'd, or secured by other ordinary or suitablenieans, in the bullet with which it is used.

This fuse differs from those heretofore employed in thatit is provided with no percussion-cap, which fact .admits of its being constructed with great facility and simplicity.'

In the copper body G, and ona flange, cl, rests a little copper grate or diaphragm, a, shown detached in Figure 3, Under this grate is pasted thin paper pr fine cloth, in order to prevent the escapeof the'fulmi'nant, which is thus held upon the grate a.

Upon the powder is spread a motel wax ,or other suitable plastic material, from one to two millimetres in thickness, in order to prevent the immediate contact of the powder with the screw-plug E, whieh is adjusted or fitted in the body G of the fuse by meansof a suitable to'ol placed the nick b. .The bed or coat of'wax may be dispensed with, but we strongly recommend it as a useful precautionary measure.

The powder which we employ is composed of two (2) parts of chlorate of'potash, one (1) part of sulphur, one-eighth of hunting-powder, and one-fiftieth of animal blaclr, whieh substances are, with the usual precautions, thoroughly mixed together. I

In order that the mixing may be as intimate as possible, the operation may be variously conducted, and those skilled in the art will at once understand to what extent the trituration can be modified. The essential point, however, is to first mix together, thoroughly and intimately, the chlorate'of potash and the animal black. On the other hand, the hunting-powder and sulphur are mixed together in like manner. By this'means the two. mixtures will be found covered with a-kindfof protecting varnish, the result of the operation to which they have been subjected, and it is only then that the wholeis mixed together'without grinding or trituration, for the powder, at'this stage, is extremely inflammable. I

The proportions of the substances employed can be varied to a certain extent.. It a less explosive powder.

is required, it will be necessary to increase the proportion of hunting-powder, and by putting in less h-uuting powder, the powder will become more inflammable. v p

It is, however, superfluous to go into these details, which can be variously modified. The important feature is that, by the aid of a fulminant powder, such as just described, or of anyone suitable composition-wea e enabled to produce projectiles which maybe exploded without the assistance of percussion-caps; audit will be."

suflicient that the detonatiug-m ixturc possesses the property of becoming inflamed under the action of the heat developed by the im-pactofthe: ball against-a resistant body, 'oritspenctration into. a soft. body. Theffulm inant may be employed in either a pulverized or a granulated state. v v

Figures 4, 4 bis, and 5, represent, in elevation and seetion, a ball of hard metal, suchas lead and antimony. It is composed of a body, g, and a. screw-threaded steel or other metallic plug, h, which is evened or filed of after it has been screwed into place. I i

If the metal of which the ball is composed is lead, the ends are shaped as indicated in Figures 6 and 7, and the upper part has a conical form given it, as islikewise represented in th,e ball shown in Figure 8 Figures 9 and 10 represent a. bullet without fuse, made in a manner similar to the balls. The screw-plug Z seals it hermetically.

Having now described our invention, what we claim, and desire to secure by Letters Patent, is

1. An explosive projectile, composed of a tube or equivalent hollow metallic body, filled with a detonating or fulminating-compound, which will be ignited or inflamed by the action of the heat developed by the impact or penetration of the projectile, substantially zis herein shown and set forth.

2. The fulminating-mixture or composition, substantially as herein specified. I 3. The percussion-fuse, for containing the fulminating-compound, made substantially as and-for the purposes herein shown and set forth.

In testimony whereof, we have signed our names to this specification before two subscribing'witnesses.

El- PERTUISET,

AUG. MUNDEL,

Witnesses: J. A. DE FLE'RoN.

EMILE BARRAULT, I A. PoLLoK. 

